Filling nozzle



April 7, 1931.

J. zwlcKY FILLING NOZZLE Filed April 28, 1928 2 Sheets-Sheet l J. ZWICKY pl 7, i931.

FILLING NOZ ZLE Filed April 28, 1928 2 Sheets-Sheet 2 Patented Apr. 7, 1931 PATENT ermee l JEAN sWICKY, oF FenNHAM ROYAL, ENGLAND FXLLING NOZZLE Application filed April 28, 1928, Serial No. 273,678, and in Great Britain March 8, 1928.

This invention relates to filling nozzles such as are commonly employed at the end of a flexible hose for supplying gasoline to the tanks of automobiles and aircraft.` The invention is particularly concerned with nozzles which embody a removable filter and a valve.

The purposes of the invention are to cheapen the manufacture of such nozzles by eliminating or minimizing machining operations, and by simplifying the assembly of the nozzle; to provide a nozzle which will remain in working order for a long time under adverse conditions; and one which can be taken to pieces for cleaning and reassembled without the use of tools. The lastnamed purposes arise from the necessity of equipping re-filling stations, especially for aircraft, in remote districts, under Widely different and often severe climatic conditions, and far removed from even the simplest engineering resources.`

Vith these purposes in view I have devised the construction of filling nozzle illustrated by the accompanying drawings and possessing the novel features described hereinafter and defined in the appended Claims.

1n the drawings,

Figures 1 and 2 show views at right angles mainly in axial section of an embodiment of the invention,

Figure 3 shows a modification of detail.

The principal component of the nozzle, herein termed the filter body, is a casing consisting of two cylindrical portions 1, 2 each open at both ends. The axes of the cylinders are at right angles but do not intersect, the

cylinders having av common diameter. The cylinder 1 receives the filter and the cylinder 2 the valve, and this relative disposition of the two cylinders makes possible considerable simplification in the attachment or fastening of both filter and valve.

The cylinder 1 has a threaded end 3 serving for the attachment of a hose, and constituting the inlet of the nozzle. 'Near this end there vis a collar i within the cylinder, and a similar collar 5 is formed at the other end of the body.

The removable filter comprises a skeleton frame upon which are stretched in cylindrical form a series of sheets 6 of perforated metal and wire gauze of increasing iineness. rlhe skeleton frame is made up of an end plate 7, an end ring 8, and longitudinal members 9 joining the plate and ring. The sheets Grest on the reduced inner ends of the plate and ring respectively and their straight edges meet and are fastened upon one of the members 9. rThe larger part of the ring 8 closely fits the collar 4, the fit being so close' as not to permit the passage of any particle which would be retained by the finest of the gauze sheets 6. The end plate 7 has a cylindrical surface fitting the collar 5 but so close a fit as between 8 and i is not here necessary. The end plate hasalso a recessed flange 10 projecting over the edge of the body 1. In the recess is a washer or packing ring 11 which makes a fluid-tight joint with the body, and being held in the recess cannot central part 15 surrounding the boss 12. A

nut 16 screwed and pinned upon the boss 12 permanently unites the cap and the vend plate, and causes the filter to be positively with drawn from the body when the cap is un screwed.

The filter separates the inlet 3 from 'the portion 2 of the filter body. One end ofthe portion 2 is closed by a screwed capl 17 which is recessed to receive packing and a gland 18. To the other end' of the portion 2 is attached a suitable delivery device, consisting, in the construction shown, of a screwed connector 19 which holds'in place rain shield 20 and receives a delivery pipe 21, the end of which may be covered when not in use by a cap 22 chained vto the body. This delivery may be unscrewed and replaced, by a different form to suit particular purposes, for instance by a delivery which will screw upon the flange of a gasoline tank.

Through the gland passes the stem 23 of a valve 2% seating upon the connector 19 at the end of the chamber 2. The valve is made with an undercut recess 25 the wall of which is cutaway on one side, and the stem 23 is made with a groove 2G. rlhe end of the stem can be entered sideways into the valve and is retained by a. sleeve 27 fitting over it. A spring 2S compressed between the sleeve 27 and the gland 18 serves both to press the valve upon its seat and to keep the gland packing tight. An additional sleeve or distance piece 29 shorter than the distance between 18 and 27 by the desired lift of the valve prevents they spring 28 being unduly compressed.

'For the purpose ot' operating the valve the stein: is formed in Figures 1 and 2 with a thread 30 fitting'a corresponding thread in the cap 17, and outside the'cap the stem carn ries a handle or head 31 by which it may be turned. ln small' nozzles the alternative construction shown in Figure 3 may be adopted, the stein 28 there having no thread, but having pivoted to itoutside the cap 17 a lever tho end: 33 of which acts as a cani or eccentricv bearing upon the cap when the lever is turnedlto the positionshown in dotted lines so that the valve is lifted'.

ll the screw threads'upon the device may be made of the same pitch. The cap 1li can be turned by hand without the aid of tools, being suitably shaped to give a goed grip. By its aid the filter may be readily withdrawnv for cleaning and as readily replaced. rlhere is no part that can' be detached and lost, and no possibility of assembling the nozzle with no lilter'in position. The valve 2d can` adjust itself' to its seating so as always to make a good joint and wear on the gland packingy is automatically taken up without attention. By means of these features and others above described the merits ot' which it is unnecessary to set out atl length the device is adapted to withstand long wear without. attention, and is readily handled and cleaned without the use of tools.

That l claim is:

1. A hlling nozzle comprising a one-piece cylindrical filter body, having a lateral extension, a filter having a closed end, closing one end of said body and separating the other from the lateral extension, a valve in said lateral extension, a threaded boss on the endof said filler, a cap screwing upon said body and pressing saidfilter into place, said boss projecting through said cap, and a nut upon said boss outside the cap.

2. A filling nozzle comprising a one-piece bony consisting of two interpenetrating cylindrical? portions open at their ends, said cylinders having their axes at right angles, a

removable filter fitting one of said portions closing one of its ends and separating the open end from the second portion, means for retaining said filter in position, a cap closing one end of the second portion containing a gland, and a valve having its stem passing through said gland and seating upon the other end of said second portion.

3. A one-piece lilling nozzle comprising a filter body formed ot two cylindrical portions havingr their axes at right angles and not intersecting, said two portions opening one into the other intermediate the ends of each, a filter closed at one end making joint with both ends ofthe first portion, a cap closing one end of the second portion, a gland in said cap, a valve closing the other endof the second portion having' its stem passing through said? cap, and a spring compressed between said` gland and saidv valve.

n testimony whereof l have signed my name to this specification.

J EAN ZWICKY.

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